CN101911177A - Portable projector background color correction scheme - Google Patents
Portable projector background color correction scheme Download PDFInfo
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- CN101911177A CN101911177A CN2008801250261A CN200880125026A CN101911177A CN 101911177 A CN101911177 A CN 101911177A CN 2008801250261 A CN2008801250261 A CN 2008801250261A CN 200880125026 A CN200880125026 A CN 200880125026A CN 101911177 A CN101911177 A CN 101911177A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
According to one embodiment of the present invention, a method of controlling an image projector comprising a multi-color laser source, projection optics, an image sensor, and a movement detection device comprises the projection of an image onto a display surface with the image projector. During projection, a movement signal generated by movement detection device is monitored, the movement signal indicating positional displacement of the image projector. A test pattern image is projected onto the display surface using the image projector, wherein the test pattern image projection is initiated as a function of the monitored movement signal. Thereafter, the projected test pattern image is captured from the display surface using the image sensor. A comparison of projected test pattern image data and captured test pattern image data is used to modify the manner in which subsequent images are projected to correct color distortions represented in the captured test pattern image.
Description
Right of priority
The application requires the right of priority of the U.S. Patent application 12/002,206 of submission on Dec 14th, 2007, and its content is all quoted at this as a reference.
Background technology
Embodiments of the present invention relate to the method that is used to control image projector, more particularly, relate to and are used for controlling the method for image projector with the cross-color of correcting orthographic projection image.
Summary of the invention
According to an embodiment of the invention, a kind of method that is used to control the image projector that comprises Multi Colour Lasers source, projection optical device, imageing sensor and mobile detection apparatus comprises uses Multi Colour Lasers source and projection optical device to project image onto display surface.This method also comprises: monitor by the movable signal that mobile detection apparatus produced the wherein displacement of this movable signal presentation video projector; And use Multi Colour Lasers source and projection optical device that test pattern image is projected on the display surface, wherein start the test pattern image projection according to the movable signal of being monitored.Afterwards, this method comprises: use imageing sensor to catch the test pattern image of institute's projection from display surface; And the test pattern image data of using institute's projection and the comparative result of the test pattern image data of being caught are revised the Multi Colour Lasers source of using image projector and projection optical device thereby successive image are carried out the cross-color that the mode of projection is proofreaied and correct representative in the test pattern image of being caught.
Specific implementations or other embodiment described herein that the present invention is not limited to above to be provided.Expection by the embodiment that is disclosed is made various modifications and changes, may obtain extra embodiment.This modification and change allow, and do not deviate from the scope of the present invention that instructions is described and claims are limited.
Description of drawings
Should believe, can more preferably understand embodiments of the present invention according to following description in conjunction with the accompanying drawings.
Fig. 1 is the synoptic diagram of rendering image projector; And
Fig. 2 is the synoptic diagram of depiction picture frame.
The embodiment of illustrating in the accompanying drawing is exemplary, is not intended to limit the present invention by claims definition.In addition, can more completely clearly understand accompanying drawing and various aspects of the present invention according to describing in detail.
Embodiment
With reference to the synoptic diagram of Fig. 1, show image projector 10 earlier according to an embodiment of the invention.This image projector comprises Multi Colour Lasers source and projection optical device 12, imageing sensor 14 and mobile detection apparatus 16.Usually, image projector 10 also comprises Programmable Logic Controller, is configured to give an order to operate the various parts of image projector 10, as described herein.In one embodiment, this image projector is arranged in a portable stage.Herein, the Multi Colour Lasers source of image projector 10, projection optical device 12, imageing sensor 14 and mobile detection apparatus 16 mechanically are coupled to described portable stage.Illustrate as schematically shown in Figure 1, portable stage can be arranged in mobile phone.
Embodiments of the present invention relate generally to be used to control the method for image projector 10 (such as shown in Figure 1 the sort of).In one embodiment, this method comprises that the Multi Colour Lasers source and the projection optical device 12 that use image projector 10 project to image 20 on the display surface 18.As illustrated in fig. 1 and 2, a plurality of light beams by making Multi Colour Lasers source 12 can project to image 20 on the display surface 18 in picture frame 22 enterprising line scannings.Multi Colour Lasers source 12 can provide a plurality of light beams by shades of colour and intensity, is such as but not limited to redness, green and blueness and their combination or cyan, magenta, yellow and black and their combination.By producing a plurality of continuous images frames 22, image 20 can be projected on the display surface 18.As shown in Figure 2, each picture frame 22 generally is made of one or more pixels 24, pixel can be categorized into the group 26 of a plurality of neighbors.In one embodiment, comprise by use and the projection optical device of multiaxis scanning mirror image 20 is projected on the display surface 18.Yet, expecting, this method or color correction scheme described herein can be applied to any projecting method, no matter be by multiaxis scanning or alternate manner.
This method generally also comprises the movable signal that monitoring is produced by the mobile detection apparatus 16 of image projector 10.The monitoring of this movable signal of being carried out by image projector 10 is to carry out simultaneously with the operation that image 20 is projected on the display surface 18.More particularly, when image projector 10 projected to image 20 on the display surface 18, mobile detection apparatus 16 produced the movable signal of the displacement that is used for presentation video projector 10.This mobile detection apparatus can be the equipment that can produce the signal of the displacement be used to represent projector 10 accelerometer, the parts of cooperating with GPS or any routine or leaved for development.
Monitor above-mentioned movable signal, to determine the displacement of image projector 10.In one embodiment, mobile detection apparatus 16 is configured to produce movable signal, described movable signal comprises the series of values of the degree of displacement that is used for presentation video projector 10.For example, the displacement numerical value that mobile detection apparatus 16 is produced can equal zero, thereby the presentation video projector is static, perhaps can be some numerical value greater than zero, thereby presentation video projector 10 or is subjected to displacement from previous static position, the possible resolution that this displacement takes place according to one of various forms and/or shift length and also foundation is distributed to described displacement numerical value.For example, the form of displacement can involving vibrations, rotation, angulation or other move, and shift length can be any length tolerance.
In another embodiment, mobile detection apparatus 16 is configured to produce movable signal, described movable signal represents that more simply projector 10 is static or has moved.No matter which kind of situation comprises static numerical value or the numerical value that is subjected to displacement by the represented displacement of movable signal, the image projector that this static numeric representation is static, the image projector that this numeric representation that is subjected to displacement is subjected to displacement.For example, static numerical value can equal zero, and the numerical value that is subjected to displacement can equal one, means that image projector has moved by a certain mobile form.
When movable signal presentation video projector 10 when being static, image projector 10 continues to project image onto on the display surface 18.Yet when movable signal presentation video projector 10 had moved or moving, said method comprised that also use Multi Colour Lasers source and projection optical device 12 project to test pattern image on the display surface 18.Thus, according to the movable signal of being monitored, start the projection of test pattern image.For example, when the displacement of the movable signal presentation video projector of being monitored 10 or degree of displacement, just can start the test pattern image projection.In this article, " test pattern image " be meant produce and any image or the picture frame of projection, can use this image or picture frame to assess and revise projection process by the successive image of 10 projections of image projector.Test pattern image can be just the same with the previous image or the picture frame of 10 projections of image projector, or change slightly, or different fully.In addition, test pattern image can comprise the compilation of pixel, and this compilation is roughly uniform aspect color or can defines the color distribution of variation.As the standard projection situation, one or more light beams by making Multi Colour Lasers source 12 are in the enterprising line scanning of test pattern image frame, test pattern image can be projected on the display surface 18, wherein the test pattern image frame can be adjacent with the standard projection frame or can be non-conterminous.
After the projection of test pattern image, can use imageing sensor 14 from display surface 18, to catch test pattern image.Imageing sensor 14 shown in Figure 1 can be camera, charge-coupled detector(CCD) or any other image sensing apparatus that is configured to catch light intensity and color from display surface.Usually, the test pattern image of institute's projection is as the compilation of pixel and captive, perhaps as the single image of average color that is used to represent test pattern image and intensity and captive.
After catching the test pattern image of institute's projection with imageing sensor 14, thereby the test pattern image data of just utilizing institute's projection and the comparative result of the test pattern image data of being caught are revised with 10 pairs of successive images of image projector and are carried out the cross-color represented in the test pattern image that the mode correction of projection caught.From the combination of view data and correction data, obtain image 20 and any successive image are carried out the employed data for projection of projection.This view data is to treat that the image 20 of projection is peculiar, and obtains correction data from the comparative result of the test pattern image data of institute's projection and the test pattern image data of being caught.
In one embodiment, by the comparative result generation offset color intensity numerical tabular of the test pattern image data of using institute's projection and the test pattern image data of being caught, can revise the mode of successive image being carried out projection.This offset color intensity numerical tabular can be used as above-mentioned correction data.These offset color intensity numerical value are added to corresponding color of pixel strength values, perhaps from corresponding color of pixel strength values, deduct these offset color intensity numerical value, thereby proofread and correct the cross-color of representative in the test pattern image of being caught.
In one embodiment, individual element ground compares with the test pattern image data of being caught the test pattern image data of institute's projection.Therefore, can revise the mode of successive image being carried out projection in individual element ground by image projector.
In another embodiment,, with reference to a plurality of adjacent pixels in the test pattern image test pattern image data of institute's projection and the test pattern image data of being caught are compared by jointly.Afterwards, by in successive image, jointly revising a plurality of adjacent pixels, can revise the mode of successive image being carried out projection.
In another embodiment, by the pixel of segmenting again in the reference test pattern image, the test pattern image data of institute's projection and the test pattern image data of being caught are compared.Afterwards, by revising the pixel of segmenting again in the successive image, can revise the mode of successive image being carried out projection.
In another embodiment, by the average color intensity numerical value of reference test pattern image, the test pattern image data of institute's projection and the test pattern image data of being caught are compared.Afterwards, by revising the average color intensity numerical value in the successive image, can revise the mode of successive image being carried out projection.For example, by revising the defined average color intensity numerical value of a plurality of color intensity numerical value of a plurality of pixels, perhaps, just can realize above-mentioned this point by revising the defined average color intensity numerical value of all colours strength values of all pixels basically.
Certainly, expection if the test pattern image data of institute's projection are just the same with the test pattern image data of being caught, then just need not be revised the mode of successive image being carried out projection.In this case, image projector can continue projected image, and does not revise its projection process.
In addition, expection between 10 starting periods, also can start the above-mentioned steps that is used for the correction of color distortion at projector.
Although above described a kind of specific color correction scheme, the of the present invention many notion relevant with the mode of the color correction that starts image projection is not limited to any specific color correction scheme.More particularly, expection by the embodiment of method described herein, can start various other color correction schemes.For example, the various embodiments of the described method of the application can start the United States Patent (USP) 6,814,448 of following patent or the described color correction scheme of patented claim: Ioka; The U.S. Patent application 2007/0154086 of Sung-Dae Cho; The U.S. Patent application 2004/0070565 of Nayar; And the U.S. Patent application 2007/0091334 of Yamaguchi.
Notice that in this article, it all is structural citation that parts of the present invention are implemented citations such as special properties or function with ad hoc fashion " configuration " or " being configured to " in concrete mode, but not about the citation of purposes.More particularly, the mode that this paper quoted from carries out " configuration " to assembly is meant the existing physical condition of this assembly, and is regarded as the clearly citation of the Structural Characteristics of this assembly.
Notice that in this article, it is critical, requisite or even very important being not intended to limit the scope of the invention or inferring some feature as " " and terms such as " typically " for 26S Proteasome Structure and Function of the present invention.On the contrary, these terms only are intended to identify the particular aspects of embodiment of the present invention, or emphasize may use in the specific implementations of the present invention or obsolete alternative or extra feature.
In order to describe and limit the present invention, notice that this paper represents the intrinsic degree of uncertainty of any quantitative comparison, value, measurement or other expression with " basically " speech.May the degree that depart from be arranged with the reference value of being stated under the situation that this paper also uses " basically " speech to represent that the basic function of a certain quantificational expression theme of discussing not causing changes.
Above described the present invention in detail and with reference to concrete embodiment, clearly, various modifications and changes all are possible under the situation of the scope of the present invention that does not deviate from appending claims and limited.More particularly, although aspects more of the present invention can be designated preferable, that have superiority or the expectation, can expect that the present invention must not be defined in these preferred aspect of the present invention.
Notice that following one or more claims have used term " wherein " as the transition phrase.In order to limit the present invention, notice, introduce this term in the claims and be as the open transition language of quoting that is used to introduce a series of architectural features, and should be " to comprise " that with the open leading term of more normal use identical mode explains.
Claims (25)
1. method that is used to control image projector, described image projector comprises Multi Colour Lasers source, projection optical device, imageing sensor and mobile detection apparatus, described method comprises:
Use the Multi Colour Lasers source and the projection optical device of described image projector to project image onto on the display surface;
Monitoring is by the movable signal that mobile detection apparatus produced, and wherein said movable signal is represented the displacement of described image projector;
Use Multi Colour Lasers source and projection optical device that test pattern image is projected on the display surface, wherein start the test pattern image projection process according to the movable signal of being monitored;
Use imageing sensor from display surface, to catch the test pattern image of institute's projection; And
The test pattern image data of using institute's projection and the comparative result of the test pattern image data of being caught are revised the Multi Colour Lasers source of using described image projector and projection optical device thereby successive image are carried out the cross-color that the mode of projection is proofreaied and correct representative in the test pattern image of being caught.
2. the method for claim 1 is characterized in that,
A plurality of light beams by making the Multi Colour Lasers source are in the enterprising line scanning of picture frame, with described image projection to display surface, and
By producing a plurality of continuous images frames, described image is carried out projection.
3. the method for claim 1 is characterized in that,
It is to obtain from the combination of peculiar view data of the image for the treatment of projection and correction data that described image and successive image are carried out the employed data for projection of projection, and wherein said correction data is to obtain from the comparative result of the test pattern image data of institute's projection and the test pattern image data of being caught.
4. the method for claim 1 is characterized in that,
The represented displacement of described movable signal comprises the series of values of the degree of displacement that is used to represent described image projector.
5. the method for claim 1 is characterized in that,
The represented displacement of described movable signal comprises static numerical value or the numerical value that is subjected to displacement, the described static static image projector of numeric representation, the image projector that the described numeric representation that is subjected to displacement is subjected to displacement.
6. the method for claim 1 is characterized in that,
One or more light beams by making the Multi Colour Lasers source project to described test pattern image on the display surface in the enterprising line scanning of test pattern image frame.
7. the method for claim 1 is characterized in that,
Described test pattern image comprises the compilation of pixel, and the compilation of this pixel is color distribution roughly uniform or that definition changes aspect color.
8. the method for claim 1 is characterized in that,
Described test pattern image is that the compilation as pixel is projected; And
The test pattern image of institute's projection is captive as the compilation of pixel.
9. method as claimed in claim 8 is characterized in that,
Individual element ground compares with the test pattern image data of being caught the test pattern image data of institute's projection.
10. method as claimed in claim 9 is characterized in that,
The mode that successive image is carried out projection is revised on individual element ground.
11. method as claimed in claim 8 is characterized in that,
, with reference to a plurality of adjacent pixels in the test pattern image test pattern image data of institute's projection and the test pattern image data of being caught are compared by jointly.
12. method as claimed in claim 11 is characterized in that,
By in successive image, jointly revising a plurality of adjacent pixels, revise the mode that successive image is carried out projection.
13. method as claimed in claim 8 is characterized in that,
By the pixel of segmenting again in the reference test pattern image, the test pattern image data of institute's projection and the test pattern image data of being caught are compared.
14. method as claimed in claim 13 is characterized in that,
By revising the pixel of segmenting again in the successive image, revise the mode that successive image is carried out projection.
15. method as claimed in claim 8 is characterized in that,
By the average color intensity numerical value of reference test pattern image, the test pattern image data of institute's projection and the test pattern image data of being caught are compared.
16. method as claimed in claim 15 is characterized in that,
By revising the average color intensity numerical value in the successive image, revise the mode that successive image is carried out projection.
17. the method for claim 1 is characterized in that,
Comparative result by the test pattern image data of using institute's projection and the test pattern image data of being caught produces offset color intensity numerical tabular, revises the mode that successive image is carried out projection.
18. method as claimed in claim 17 is characterized in that,
Described offset color intensity numerical value is added to corresponding color of pixel strength values, perhaps deducts described offset color intensity numerical value from corresponding color of pixel strength values, thereby proofreaies and correct the cross-color of representative in the test pattern image of being caught.
19. the method for claim 1 is characterized in that,
The mode that successive image is carried out projection is revised on individual element ground.
20. the method for claim 1 is characterized in that,
By revising the pixel of segmenting again in the successive image, revise the mode that successive image is carried out projection.
21. the method for claim 1 is characterized in that,
By revising the defined average color intensity numerical value of a plurality of color intensity numerical value of a plurality of pixels, revise the mode that successive image is carried out projection.
22. the method for claim 1 is characterized in that,
By revising the defined average color intensity numerical value of all colours strength values of all pixels basically, revise the mode that successive image is carried out projection.
23. the method for claim 1 is characterized in that,
Multi Colour Lasers source, projection optical device, imageing sensor and the mobile detection apparatus of described image projector mechanically are coupled to common portable stage, and
Described portable stage is arranged in mobile phone.
24. an image projector, described image projector comprises Multi Colour Lasers source, projection optical device, imageing sensor, mobile detection apparatus and Programmable Logic Controller, and they jointly are configured to:
Use the Multi Colour Lasers source and the projection optical device of described image projector to project image onto on the display surface;
Monitoring is by the movable signal that mobile detection apparatus produced, and wherein said movable signal is represented the displacement of described image projector;
Use Multi Colour Lasers source and projection optical device that test pattern image is projected on the display surface, wherein start the test pattern image projection process according to the movable signal of being monitored;
Use imageing sensor from display surface, to catch the test pattern image of institute's projection; And
The test pattern image data of using institute's projection and the comparative result of the test pattern image data of being caught are revised the Multi Colour Lasers source of using described image projector and projection optical device thereby successive image are carried out the cross-color that the mode of projection is proofreaied and correct representative in the test pattern image of being caught.
25. image projector as claimed in claim 24 is characterized in that,
Described image projector is arranged in portable stage, and Multi Colour Lasers source, projection optical device, imageing sensor and the mobile detection apparatus of described image projector mechanically are coupled to described portable stage, and
Described portable stage is arranged in mobile phone.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/002,206 | 2007-12-14 | ||
| US12/002,206 US20090153749A1 (en) | 2007-12-14 | 2007-12-14 | Portable projector background color correction scheme |
| PCT/US2008/013521 WO2009078929A1 (en) | 2007-12-14 | 2008-12-09 | Portable projector background color correction scheme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101911177A true CN101911177A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008801250261A Pending CN101911177A (en) | 2007-12-14 | 2008-12-09 | Portable projector background color correction scheme |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090153749A1 (en) |
| JP (1) | JP2011508248A (en) |
| CN (1) | CN101911177A (en) |
| TW (1) | TW200943269A (en) |
| WO (1) | WO2009078929A1 (en) |
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| JP2007208698A (en) * | 2006-02-02 | 2007-08-16 | Oki Electric Ind Co Ltd | Video projection equipment |
| JP2007248824A (en) * | 2006-03-16 | 2007-09-27 | Matsushita Electric Ind Co Ltd | Image projection apparatus and system |
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- 2008-12-09 JP JP2010537946A patent/JP2011508248A/en active Pending
- 2008-12-09 WO PCT/US2008/013521 patent/WO2009078929A1/en active Application Filing
- 2008-12-09 CN CN2008801250261A patent/CN101911177A/en active Pending
- 2008-12-12 TW TW097148683A patent/TW200943269A/en unknown
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| CN1552056A (en) * | 2000-07-07 | 2004-12-01 | ������ | Cellular phone with built in optical projector for display of data |
| CN1517780A (en) * | 2003-01-21 | 2004-08-04 | 惠普开发有限公司 | Correcting of projection image based on reflection image |
| CN1677246A (en) * | 2004-03-29 | 2005-10-05 | Asml荷兰有限公司 | Lithographic apparatus and device manufacturing method |
| CN1763630A (en) * | 2004-10-22 | 2006-04-26 | 惠普开发有限公司 | Projector alignment method and user interface |
| US20060256298A1 (en) * | 2005-05-12 | 2006-11-16 | Texas Instruments Incorporated | Method and system for displaying a stabilized image by a projector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691789A (en) * | 2020-05-19 | 2021-11-23 | 精工爱普生株式会社 | Control method of display system, display system and control method of projector |
| CN113691789B (en) * | 2020-05-19 | 2023-06-16 | 精工爱普生株式会社 | Control method of display system, display system and control method of projector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009078929A1 (en) | 2009-06-25 |
| US20090153749A1 (en) | 2009-06-18 |
| TW200943269A (en) | 2009-10-16 |
| JP2011508248A (en) | 2011-03-10 |
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Application publication date: 20101208 |